(1) Start engine (TM 9-2320-364-10).
(2) Push in trailer charge valve in
(3) While assistant fully applies and
releases brake pedal, observe
suspect brake(s) operation.
(a) If brakes do not release correctly,
fault not corrected. Perform
Steps (4) through (6) below and
(b) If brakes release correctly,
(4) Release brake pedal.
(5) Pull out trailer charge valve in truck.
(6) Turn OFF ENGINE switch.